Design Microservices Architecture with Patterns and Principles - CQRS - Benefits and Drawbacks

The video tutorial discusses the Command Query Responsibility Segregation (CQRS) design pattern, highlighting its benefits and drawbacks. Key benefits include scalability, improved query performance, and enhanced maintainability and flexibility. However, CQRS also introduces complexity and eventual consistency challenges, which require careful consideration when implementing. The tutorial emphasizes the importance of strategic application of CQRS principles, especially in systems requiring strong consistency.

What is one of the main advantages of separating read and write databases in CQRS?

• Increased data redundancy

• Independent scaling of databases

• Simplified database schema

• Reduced need for backups

How does CQRS improve query performance?

• By eliminating the need for business logic

• By reducing complex join queries in the read database

• By denormalizing data in the write database

• By using a single database for all operations

What aspect of CQRS contributes to better system evolution over time?

• Combining read and write concerns

• Separating read and write concerns into different databases

• Using a single schema for all databases

• Avoiding database normalization

What is a major drawback of implementing CQRS?

• Immediate data consistency

• Increased system complexity

• Simplified architecture

• Reduced database performance

Why might CQRS not be suitable for applications requiring strong consistency?

• It relies on eventual consistency

• It requires a single database

• It uses synchronous communication

• It eliminates data redundancy